From nobody Fri Dec 19 20:34:07 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2E39B256C61 for ; Wed, 5 Mar 2025 18:16:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741198595; cv=none; b=JpZwCXMSV/d+8sTS/ZC3gX8rak5zx5dO5qoUb/lhchsFNxZe/2Abk/UPto48taFz27zYGOcehNYrwTqy+wIsnDS3FTt8Bmykb6/lIMu+yh2J+4+dUoyDQ7LMQqn93Rsv1GhNiAGIzxgpsYWvIAUvPm4aDnzKCFnHhpX/nGXQhto= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741198595; c=relaxed/simple; bh=8avla5b+KxmfOJySvGj+DodzRtTHcPd16UXdPAbl5pc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=jC3SSZptJ7helnKHZQmJvUP2iTc1pH+NUafbRAj30GlfVmWziAEWREDQdcrCCTb/4iQNJ1hbIXMlQm9UcrJbvoJ5pkN/l3FrevZM0jBRvmnouNqbPrv0x3MX3qXY2uHpPyOw6yyze4NQG6PJCZmc3sgcRNubvTB+1hhNtoFjNmQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=J7zx6935; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="J7zx6935" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C3FF4C4CED1; Wed, 5 Mar 2025 18:16:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741198595; bh=8avla5b+KxmfOJySvGj+DodzRtTHcPd16UXdPAbl5pc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=J7zx6935Lw/ggyahtkH9JuxQGHB7OziMFhKqYpIdYXK1AwF99oacmfuhm/HCW2zjq nMEFh3WjAxFhwaYN+/wR5UnDYbecUDIesx1CWpuYZRcbSNb7C9lZn5+OSoSL+WSxcX emekqO9bfmC/noXO7JmQTP8vEA5gwJWhac81xKU5Q6fnF+k1zykuU24bqfpptTmDJR tYUlA/oEk909vsO7NSImsB/xMvg7XIFT7l+1oQ3sLz9m/YnTeUHYYnHoX6zzrdC9kW SpBemJEY0tvPtLU55sGAYCm3ZMs8jVNAA4aZunXcGqurlEh8EElDLseZVuGQQ2WhnX /pM5FE9fLjbbA== From: SeongJae Park To: Cc: SeongJae Park , "Liam R. Howlett" , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , Shakeel Butt , Vlastimil Babka , kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 13/16] mm/madvise: batch tlb flushes for process_madvise(MADV_FREE) Date: Wed, 5 Mar 2025 10:16:08 -0800 Message-Id: <20250305181611.54484-14-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250305181611.54484-1-sj@kernel.org> References: <20250305181611.54484-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" MADV_FREE internal logic can be invoked with batching tlb flushes. Update vector_madvise(), which is called for process_madvise(), to use that in the efficient way, by passing an mmu_gather object that it initializes before starting the work, and flushing the tlb entries at once after all the internal works are done. Signed-off-by: SeongJae Park --- mm/madvise.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/madvise.c b/mm/madvise.c index efa4184d6cf5..f1beadb6176a 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -968,7 +968,8 @@ static long madvise_dontneed_free(struct vm_area_struct= *vma, return madvise_dontneed_single_vma( madv_behavior->tlb, vma, start, end); else if (behavior =3D=3D MADV_FREE) - return madvise_free_single_vma(NULL, vma, start, end); + return madvise_free_single_vma( + madv_behavior->tlb, vma, start, end); else return -EINVAL; } --=20 2.39.5